JPH0588049U - Character information reception display device - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a character information receiving / displaying device which simplifies a converting unit and is suitable for downsizing. A selection unit 13 for receiving a data signal relating to character information sent from an information supply source and selectively extracting the data signal, and a conversion unit for converting the data signal extracted by the selection unit into a display signal. 14, a control unit 15 that processes a display signal from the conversion unit corresponding to a display format that can be arbitrarily set, and a display unit based on the display format based on the signal processed by the control unit. And a display device 21 for displaying the character information.
The character information receiving / displaying device 10 is configured such that the display device controls the display unit 25 directly by the control unit 23 ′ and at regular intervals by a timer interrupt.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a character information receiving / displaying device which receives various kinds of information such as cable broadcasting and teletext and displays the received character information.

[0002]

[Prior Art]

 Conventionally, a character information receiving / displaying device for receiving and displaying various kinds of information such as cable broadcasting and text broadcasting has been constructed as shown in FIG. 9, for example. That is, in FIG. 9, the character information receiving and displaying device 1 converts a data signal from the selecting unit 2 into a display signal, and a selecting unit 2 for extracting a data signal relating to character information of a predetermined channel from the input information signal. And a display unit 4 for performing a display corresponding to the data signal based on the display signal from the conversion unit 3.

The character information receiving / displaying device 1 configured as described above is adapted to select a broadcast signal corresponding to a predetermined channel preset by the selecting unit 2 and take out the data signal. Further, the conversion unit 3 reads the font data or the like for the character code from the ROM 6 based on the data signal processed by the selection unit 2 and sends a display drive signal, and the control unit 5 and the data signal. Various display data is selected from the memory 8 which stores the display data obtained from the display data, and the character information is displayed based on the display data via the display drive control unit 7 by the display drive signal from the control unit 5. And a display unit 4 for displaying. The display drive controller 7 is composed of an IC such as a gate array.

[0004]

[Problems to be solved by the device]

 However, in the character information receiving / displaying device 1 configured as described above, since the display drive control unit 7 for driving the display unit 4 is necessary, there is a problem that the number of parts increases and the device becomes large. there were. In view of the above points, the present invention has an object to provide a character information receiving / displaying device which is suitable for downsizing with a reduced number of parts.

[0005]

[Means for Solving the Problems]

 According to the present invention, the above-mentioned object is to receive a data signal relating to character information sent from an information supply source and selectively extract the data signal, and a data signal extracted by the selection unit. Based on the signal processed by the control unit and the control unit processing the display signal from the conversion unit corresponding to the display format that can be arbitrarily set. A display unit for displaying the character information based on the above display format on the display unit, the display unit controlling the display unit directly by the control unit and at regular intervals by a timer interrupt. Is achieved by the character information receiving and displaying device.

[0006]

[Action]

 According to the above configuration, since the display device directly controls the display unit by the control unit without the intermediary of the display control IC, the display control IC is not necessary. As a result, the mounting board can be downsized and the cost can be reduced, and various processes by the control unit, especially the control of the display unit are performed by the timer interruption. Since it is not necessary to provide a control device for controlling the display unit, the cost can be further reduced.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. 1 and 2 show an embodiment of a character information receiving / displaying device according to the present invention. The character information receiving / displaying device 10 comprises a receiving device 11 and a display device 21.

As shown in FIG. 3, the receiving device 11 receives a desired signal from a receiving unit 12 to which a multi-channel broadcast signal from an information supply source such as a cable broadcast should be input, and a receiving signal from the receiving unit 12. The selection unit 13 for extracting the data signal relating to the character information of the broadcast channel, the conversion unit 14 for converting the data signal extracted by the selection unit 13 into the display signal, and corresponding to the display format that can be arbitrarily set, The control unit 15 includes a control unit 15 that processes the display signal from the conversion unit 14 into a display control signal, and a display signal output unit 16 that outputs the display control signal from the control unit 15. The selection section 13 is adapted to receive a selection signal from a selection operation key 13a for selecting a broadcast channel. Here, the selection unit 13, the conversion unit 14, and the control unit 15 are configured in one microprocessor 27.

As shown in FIG. 3, the display device 21 includes an input unit 22 connected to the display signal output unit 16 of the receiving device 11, and an input unit 22 connected to the input unit 22. Based on the display control signal processed by the control unit 15 of No. 1, the control unit 23 that reads the font data or the like for the character code from the ROM 23a and sends the display drive signal, and the display drive signal from the control unit 23, The display drive control unit 24 includes a display unit 25 that displays the character information based on the display format.

The display drive control unit 24 is usually composed of an IC such as a gate array, but in this case, as indicated by reference numeral 23 ′, it is integrated with the control unit 23 and The unit 23 directly controls the display of the display unit 25.

Here, as shown in FIG. 1, the receiving device 11 is housed in a case 17, and the front operation panel of the case 17 has a power switch 17 a, a display panel 17 b, and a band switching unit. Switch 17c, channel changeover switch 17d, input switch 17e, input end switch 17f, cancel switch 17g, time setting changeover switch 17h, mode changeover switch 17i, timer changeover switch 17j, reservation changeover switch 17k, time display changeover switch 17m. In addition, a display speed switching switch (not shown) and a brightness adjusting switch (not shown) are provided on the rear surface.

The band changeover switch 17c, the channel changeover switch 17d, the input switch 17e, the input end switch 17f and the cancel switch 17g constitute the selection operation key 13a.

The character information receiving / displaying device 10 according to the present invention is configured as described above, and operates the input switch 17e on the front operation panel to switch to the band / channel input mode to switch the band. By operating the switch 17c or the channel switching switch 17d, a plurality of bands, for example, 12 bands from A to L, or each channel, for example, 99 channels from 1 to 99 are sequentially, that is, The band / channel switching is completed by operating the input end switch 17f after switching in ascending order by one switching switch and by descending order by the other switching switch. At this time, if the cancel switch 17g is operated instead of operating the input end switch 17f, the band / channel switching is canceled.

In this way, when the desired band / channel is selected, the reception device 11 causes the selection unit 13 to correspond to the selected band and channel in the multi-channel broadcast signal from the reception unit 12. The data signal relating to the character information is taken out, and the data signal is converted into a display signal by the conversion unit 14 by adding control data adapted to the display device 21.

The data signal includes a message and a method of displaying the message, such as a static display, a blinking display, a horizontal flow display, a vertical flow display, and a diagonal flow display, in which the entire display is moved integrally, or a vertical display. It includes display methods such as display / suction, horizontal discharge / suction, vertical slippage, horizontal slippage, etc. that move the display in divided states.

When the display speed changeover switch of the receiving device 11 is operated, the display speed and the display time displayed on the display unit 25 of the display device 21 can be changed appropriately. Also, operating the brightness adjustment switch will adjust the brightness of the display.

In addition, control data relating to various display formats, such as display speed, brightness, display mode, etc., is input in advance to the control unit 15 of the receiving device 11. A control signal is added to the display signal in accordance with the display format selected in (1) and is output from the output section 16 to the display device 21 as a display control signal.

In this case, the control section 23 is adapted to perform control as shown in FIG. 4, for example. That is, in FIG. 4, the control unit 23 performs a monitoring process as a main process, a display data output control process by a timer interrupt, a tuner response process and a tuner data reception process, and the reception device 11 by the tuner data reception process. The display data obtained from the display control signal is stored in the memory 26 on the basis of the display control signal sent from the memory 26, and various display data stored in the memory 26 are selected and displayed on the display unit 25. It is output and displayed on the display unit 25.

Here, in the monitoring process, as shown in FIG. 5, the presence or absence of a display control signal from the receiving device 11 is first detected, and if there is a display control signal, the display control signal is detected. After analysis, data such as characters, brightness, and colors are stored in the memory 26. After that, the process moves to the display mode process, the data stored in the memory 26 is selected, and based on the selected data, the process such as reading the font data or the like for the character from the ROM 23a is performed. Is repeated at regular intervals.

In the display data output control process, as shown in FIG. 6, for example, in the case of the display device 25 using a two-color LED, a red color or the like is first displayed by a timer interrupt at regular intervals. Read the font data of the first color for one line, set the data in the first synchronous serial port, then read the font data of the second color such as green for one line, and then perform the second synchronization. After setting the data to the serial port, output the data from two serial ports at the same time, display the line, and output the data of each line in sequence to display one screen. It has become.

Further, in the tuner response process, as shown in FIG. 7, the presence or absence of response data to the receiving device 11 is detected by a timer interrupt at regular time intervals, and if there is response data, The response data is serially output to the receiving device 11, and the process is completed.

Furthermore, in the tuner data reception processing, as shown in FIG. 8, the presence or absence of a display control signal, that is, valid reception data from the receiving device 11 is detected by a timer interrupt at regular time intervals, and valid reception is performed. If there is data, the received data is stored in the memory 26, and the process is terminated.

In this way, the display control signal sent from the receiving device 11 is input to the control unit 23 from the input unit 22 of the display device 21, and the control unit 23 is based on this display control signal. Then, the font data or the like corresponding to the character code is read from the ROM 23a and directly output to the display unit 25, and thus the character information based on the above display format can be displayed on the display unit 25. ing.

In the above-described embodiment, the display drive control unit 24 of the display device 21 is configured so that the control unit 23 realizes a function by its control operation, so that the display unit is displayed separately from the control unit 23. It is not necessary to provide a drive control circuit section, so that the number of parts can be reduced and the size can be reduced.

[0025]

[Effect of the device]

 As described above, according to the present invention, the display drive control unit 24 of the display device 21 is configured such that the control unit 23 realizes the function by its control operation. It is not necessary to provide a control circuit section, so that the number of parts can be reduced and it is suitable for downsizing, and even if the display section is changed to one having a different control method, the software of the display drive control section 24 (timer By changing the interrupt display data output control process), an extremely excellent character information receiving / displaying device can be provided without changing the hardware.

[Brief description of drawings]

FIG. 1 is a perspective view showing a receiving device of an embodiment of a character information receiving and displaying device according to the present invention.

FIG. 2 is a perspective view showing a display device of the character information receiving / displaying device of FIG.

FIG. 3 is a block diagram of the character information receiving / displaying device of FIGS. 1 and 2.

FIG. 4 is a system block diagram showing control in the display device of FIG.

5 is a flowchart showing a monitoring process in the display device of FIG.

6 is a flowchart showing a display data output control process by a timer interrupt in the display device of FIG.

7 is a flowchart showing a tuner response process by a timer interrupt in the display device of FIG.

8 is a flowchart showing a tuner data receiving process by a timer interrupt in the display device of FIG.

FIG. 9 is a schematic block diagram showing an example of a conventional character information receiving / displaying device.

[Explanation of symbols]

 10 Character Information Reception / Display Device 11 Reception Device 12 Reception Unit 13 Selection Unit 13a Selection Operation Key 14 Conversion Unit 15 Control Unit 16 Output Unit 17 Case 21 Display Device 22 Input Unit 23 Control Unit 23 'Control Unit 24 Display Drive Control Unit 25 Display Part 26 memory 27 microprocessor

Claims (1)

[Scope of utility model registration request] 1. A selection unit for receiving a data signal relating to character information transmitted from an information supply source and selectively extracting the data signal, and a conversion for converting the data signal extracted by the selection unit into a display signal. Section, a control section for processing a display signal from the conversion section corresponding to a display format that can be arbitrarily set, and a display section based on the display format based on the signal processed by the control section. A character information receiving and displaying device, comprising: a display device for displaying the character information, wherein the display device controls the display unit directly by a control unit and at regular time intervals by a timer interrupt. .